4 Getting started
When we connect your private circuit, the LCD will show one of three
menu headings:
,
or
.
To rotate the LCD to the menu you require:
• press the up or down
Scroll
button.
When you see the
>
symbol on the right of the LCD display, there are
further options available within the menu. To see these further options:
• press the
Menu
button.
When your circuit is provided, depending on the type of circuit and the
conditions at the distant end, the
menu will show one of the
following messages, and a light may also be illuminated:
Whenever a binary 1 is present in the recieved data, the
RXD
light will
be illuminated.
STATUS
TEST
STATUS
OPTIONS
Operating guide
7
circuit type
message you see
light illuminated
X.21 64kbit/s /56kbits
S: NTU READY
–
X.21 2.4-48kbit/s
S: NTU NOT READY
RX NRDY
X.21 bis (v.24) cct.
S: NTU READY
RXD
108/1 held high by BT
X.21 bis (v.24) cct.
S: NTU NOT READY
RX NRDY
108/1 under your control